US5349494A - Semiconductor device with capacitor insulating film and method for fabricating the same - Google Patents
Semiconductor device with capacitor insulating film and method for fabricating the same Download PDFInfo
- Publication number
- US5349494A US5349494A US07/920,921 US92092192A US5349494A US 5349494 A US5349494 A US 5349494A US 92092192 A US92092192 A US 92092192A US 5349494 A US5349494 A US 5349494A
- Authority
- US
- United States
- Prior art keywords
- silicon nitride
- nitride film
- film
- semiconductor device
- insulating film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 17
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 57
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 57
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 19
- 238000005121 nitriding Methods 0.000 claims abstract description 18
- 229920005591 polysilicon Polymers 0.000 claims abstract description 17
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 15
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 229910007277 Si3 N4 Inorganic materials 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02164—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon oxide, e.g. SiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/022—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being a laminate, i.e. composed of sublayers, e.g. stacks of alternating high-k metal oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/02247—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by nitridation, e.g. nitridation of the substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/02255—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by thermal treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02321—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer
- H01L21/02323—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of oxygen
- H01L21/02326—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of oxygen into a nitride layer, e.g. changing SiN to SiON
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/318—Inorganic layers composed of nitrides
- H01L21/3185—Inorganic layers composed of nitrides of siliconnitrides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4908—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET for thin film semiconductor, e.g. gate of TFT
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/3143—Inorganic layers composed of alternated layers or of mixtures of nitrides and oxides or of oxinitrides, e.g. formation of oxinitride by oxidation of nitride layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3211—Nitridation of silicon-containing layers
Definitions
- the present invention relates to a semiconductor device and a method for fabricating it, and more particularly to a structure of a capacitor insulating film and a method for fabricating it.
- FIG. 1 shows the structure of one example of these conventional films.
- a lower electrode 3 having a predetermined shape and made of impurity-doped polysilicone (also called polycrystalline silicon) is formed on the surface of the silicon oxide film 5 on a semiconductor substrate 6.
- a silicon nitride film 2 having a thickness of about 10 nm is formed by chemical vapor deposition techniques so as to cover the surface of the lower electrode 3. Thereafter, the surface of the silicon nitride film 2 is thermally oxidized to be converted into a silicon oxide film 7 having a thickness of about 2-3 nm. Subsequently, an upper electrode 4 made of polysilicon is formed so as to cover the silicon oxide film 7.
- the capacitor insulating film is composed of the silicon nitride film 2 formed by the chemical vapor deposition and the silicon oxide film 7 formed by the thermal oxidation. The capacitor insulating film has a thickness of about 7-8 nm in equivalent thickness of an oxide film.
- the conventional capacitor insulating film has the Following defects.
- the conventional silicon nitride film formed by the chemical vapor deposition contains many weak-spots so that a single silicon nitride film of 8 nm or less presents difficulties in its use as a stabilized capacitor insulating film with less leakage current.
- a double layered SiO 2 /Si 3 N 4 film wherein the weak spots are covered by oxidation film on tile surface of the silicon nitride film is now widely used in the current DRAMs, etc.
- this double layered film when it has a thickness of, 5 nm or less in equivalent thickness of an oxide film, also suffers from an abrupt increase in the leakage current.
- the chemical vapor deposition tends to introduce oxygen into the silicon nitride film. This introduction of oxygen is remarkable particularly in the initial process where the silicon nitride film grows on the oxide film. Also where a silicon nitride film is to be grown on polysilicone from a vapor phase, it will actually grow on the native oxide film formed on the polysilicone surface. Thus, it was difficult to form a stoichiometric silicon nitride film 10 nm or less thick on polysilicon by the chemical vapor deposition techniques. Reference is made to "J. A. Wurzbach and F. J. Grunthaner, J. Electrochem. Soc., Vol 130, No.3 (1983) p.691" .
- An object of the present invention is to provide a semiconductor device with a capacitor insulating film including a silicon nitride film formed by thermal nitriding.
- Another object of the present invention is to provide a method for fabricating a semiconductor device comprising tile step of thermally nitriding the surface of a lower polysilicon electrode.
- the semiconductor device according to tile present invention includes a capacitor insulating film composed of a silicon nitride film which is provided by thermally nitriding the surface of the lower electrode of polysilicon, and another silicon nitride film formed by the chemical vapor deposition.
- the method for fabricating a semiconductor device includes the steps of forming a silicon nitride film by thermally nitriding the surface of a lower electrode made of polysilicon, and forming another silicon nitride film by the chemical vapor deposition.
- the thermal nitriding is carried out preferably in a nitriding atmosphere of any of nitrogen, ammonia, hydrazine, etc.
- the silicon nitride film formed by chemical vapor deposition contains much oxygen.
- the silicon nitride film directly formed by thermal nitriding is stoichiometric and has a higher permittivity than the former. In equivalent thickness of an oxide film, therefore, the latter silicon nitride film actually has a larger thickness than tile former silicon nitride film.
- the silicon nitride film formed by tile thermal nitriding is more effective in reducing a leakage current.
- the thermal nitriding enables to removal of the native oxide film existing between tile polysilicon film and the silicon nitride film formed by tile chemical vapor deposition in the semiconductor device structure fabricated by the conventional method.
- the capacitor insulating film according to the present invention is a film with improved reliability for dielectric breakdown.
- FIG. 1 is a sectional view of a semiconductor device For explaining the conventional semiconductor device structure and its fabrication method
- FIG. 2 is a sectional view of a semiconductor device for explaining a first embodiment according to the present invention
- FIGS. 3A to 3C are sectional views of a semiconductor device for explaining main steps for tile fabricating method according to the first embodiment of the present invention
- FIGS. 4 and 5 are graphs for explaining the effects of the first embodiment according to the present invention in comparison with the prior art.
- FIGS. 6A and 6B are sectional views of a semiconductor device for explaining steps for the fabrication method of a second embodiment according to the present invention.
- FIG. 2 is a sectional view of tile structure of a semiconductor device according to the first embodiment of the present invention.
- a lower electrode 3 having a predetermined shape and made of impurity-doped polysilicon is formed on the surface of a silicon oxide film 5 on a semiconductor substrate 6.
- a capacitor insulating film covering the lower electrode 3 is composed of a silicon nitride film 1 formed by the thermal nitriding (thermal nitridation) and another silicon nitride film 2 formed by the chemical vapor deposition.
- the thickness of the silicon nitride film 1 is several nanometers and that of the silicon nitride film 2 is 4 nm or so.
- An upper electrode 4 made of polysilicon is formed on tile surface of the capacitor insulating film.
- the capacitor insulating film is composed of only the silicon nitride Film 1, it is too thin so that the silicon nitride film 2 is added to the silicon nitride film 1. It should be noted that the silicon nitride film 1 is a stoichiometric film with less weak-spots.
- FIGS. 3A to 3C showing main process steps and FIG. 2, an explanation will be given of a method of fabricating the semiconductor device according to the present invention.
- impurity-doped polysilicon is formed on the surface of the silicon oxide film 5 on the semiconductor substrate 6.
- the polysilicon is then patterned into a predetermined shape to form tile lower electrode 3 (Fig. 3A).
- fast thermal nitriding at 850° C. for 60 seconds using a rapid thermal processing equipment is done, so that the silicon nitride film i having a thickness of several nanometers is formed on the surface of the lower electrode 3 (FIG. 3B) due to the thermal nitriding.
- another silicon nitride film 2 is deposited to a thickness of 4 nm or so, by the low pressure chemical vapor deposition, on the silicon nitride film 1 formed due to the thermal nitriding (FIG.
- tile capacitor insulating film has a thickness of about 4.5 nm in equivalent thickness of an oxide film.
- FIGS. 4 and 5 are graphs showing tile effects of this embodiment in comparison with tile semiconductor device including the conventional capacitor insulating film.
- FIG. 4 shows the strength of the applied electric field versus the thickness of the capacitor insulating film in equivalent thickness of an oxide film.
- the strength of the applied electric field represents the value corresponding to the leakage current density of 10 -8 A/cm 2 .
- the applied electric field strength in this embodiment is higher by about 2 MV/cm than in the prior art.
- this embodiment provides an improvement in the leakage current characteristics over the prior art.
- FIG. 5 shows Weibull distribution plots of a cumulative failure rate P versus a stress applying time when an electric field is applied to the capacitors including the respective capacitor insulating films according to this embodiment and the prior art.
- the capacitor according to this embodiment provides a more excellent long-term reliability than the prior art.
- FIGS. 6A and 6B show process steps for explaining the semiconductor device according to a second embodiment of the present invention.
- the method of fabricating the semiconductor device according to this embodiment is entirely the same as that in the first embodiment up to the step of FIG. 3C.
- a silicon oxide film 7 is formed by the thermal oxidation method on the surface of the silicon nitride film 2 formed by the chemical vapor deposition (FIG. 6A).
- polysilicon is deposited on the silicon oxide film 7 by the low pressure chemical vapor deposition, and doped with impurities.
- the polysilicone is then patterned to form an upper electrode 4 (FIG. 6B).
- tile silicon oxide film 7 is Formed by thermally oxidizing tile surface of the silicon nitride film 2 due to the chemical vapor deposition, provides a further improvement in the leakage current characteristic and long-term reliability over the first embodiment described above.
- the semiconductor device has a capacitor insulating film including a silicon nitride film Formed due to the thermal nitriding.
- the method for fabricating it includes the step of thermally nitriding tile surface of a lower electrode of polysilicon to provide the silicon nitride film to be used as a part of the capacitor insulating film.
- the native oxide film on the lower electrode surface can be transformed into a silicon nitride film with reduced density of weak spots, reduced leakage current and improved long-term reliability.
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3-188512 | 1991-07-29 | ||
JP3188512A JP2722873B2 (en) | 1991-07-29 | 1991-07-29 | Semiconductor device and manufacturing method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
US5349494A true US5349494A (en) | 1994-09-20 |
Family
ID=16225021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/920,921 Expired - Lifetime US5349494A (en) | 1991-07-29 | 1992-07-28 | Semiconductor device with capacitor insulating film and method for fabricating the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US5349494A (en) |
EP (2) | EP0525650B1 (en) |
JP (1) | JP2722873B2 (en) |
KR (1) | KR0131448B1 (en) |
DE (1) | DE69232131T2 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5508221A (en) * | 1993-12-02 | 1996-04-16 | Nec Corporation | Method for forming capacitor element of DRAM |
US5519323A (en) * | 1992-05-15 | 1996-05-21 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Integrable conductivity measuring device |
US5631804A (en) * | 1995-11-13 | 1997-05-20 | Micron Technology, Inc. | Contact fill capacitor having a sidewall that connects the upper and lower surfaces of the dielectric and partially surrounds an insulating layer |
US5691556A (en) * | 1993-02-17 | 1997-11-25 | Seiko Instruments Inc. | Step-up semiconductor integrated circuit and electronic equipment using the semiconductor integrated circuit |
US5753963A (en) * | 1994-11-07 | 1998-05-19 | International Busness Machines Corp. | Multi-surfaced capacitor for storing more charge per horizontal chip area |
US5793076A (en) * | 1995-09-21 | 1998-08-11 | Micron Technology, Inc. | Scalable high dielectric constant capacitor |
US5801916A (en) * | 1995-11-13 | 1998-09-01 | Micron Technology, Inc. | Pre-patterned contact fill capacitor for dielectric etch protection |
US5812364A (en) * | 1996-07-03 | 1998-09-22 | Mitsubishi Denki Kabushiki Kaisha | Capacitor |
US5843830A (en) * | 1996-06-26 | 1998-12-01 | Micron Technology, Inc. | Capacitor, and methods for forming a capacitor |
US5917213A (en) * | 1997-08-21 | 1999-06-29 | Micron Technology, Inc. | Depletion compensated polysilicon electrodes |
US6037639A (en) * | 1997-06-09 | 2000-03-14 | Micron Technology, Inc. | Fabrication of integrated devices using nitrogen implantation |
US6124164A (en) * | 1998-09-17 | 2000-09-26 | Micron Technology, Inc. | Method of making integrated capacitor incorporating high K dielectric |
US6133094A (en) * | 1993-03-09 | 2000-10-17 | Hitachi Ltd | Semiconductor device and process of producing the same |
US6258690B1 (en) * | 1996-03-29 | 2001-07-10 | Nec Corporation | Method of manufacturing semiconductor device |
US6284663B1 (en) * | 1998-04-15 | 2001-09-04 | Agere Systems Guardian Corp. | Method for making field effect devices and capacitors with thin film dielectrics and resulting devices |
US6373114B1 (en) | 1998-10-23 | 2002-04-16 | Micron Technology, Inc. | Barrier in gate stack for improved gate dielectric integrity |
US6458714B1 (en) | 2000-11-22 | 2002-10-01 | Micron Technology, Inc. | Method of selective oxidation in semiconductor manufacture |
US6483691B1 (en) * | 1999-02-04 | 2002-11-19 | Rohm Co., Ltd. | Capacitor and method for manufacturing the same |
US6614643B1 (en) * | 2002-04-24 | 2003-09-02 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device having a capacitor element |
US20030224563A1 (en) * | 2001-12-28 | 2003-12-04 | Stmicroelectronics S.R.L. | Manufacturing process of a semiconductor non-volatile memory cell and corresponding memory cell |
US20080170346A1 (en) * | 2007-01-17 | 2008-07-17 | Andrew Corporation | Folded Surface Capacitor In-line Assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5563762A (en) * | 1994-11-28 | 1996-10-08 | Northern Telecom Limited | Capacitor for an integrated circuit and method of formation thereof, and a method of adding on-chip capacitors to an integrated circuit |
US5711891A (en) * | 1995-09-20 | 1998-01-27 | Lucent Technologies Inc. | Wafer processing using thermal nitride etch mask |
KR100259038B1 (en) * | 1997-03-31 | 2000-06-15 | 윤종용 | Method for manufacturing semiconductor capacitor and semiconductor capacitor manufactured thereby |
KR100745495B1 (en) | 1999-03-10 | 2007-08-03 | 동경 엘렉트론 주식회사 | Semiconductor fabrication method and semiconductor fabrication equipment |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143393A (en) * | 1977-06-21 | 1979-03-06 | International Business Machines Corporation | High field capacitor structure employing a carrier trapping region |
US4746630A (en) * | 1986-09-17 | 1988-05-24 | Hewlett-Packard Company | Method for producing recessed field oxide with improved sidewall characteristics |
US4882649A (en) * | 1988-03-29 | 1989-11-21 | Texas Instruments Incorporated | Nitride/oxide/nitride capacitor dielectric |
US4980307A (en) * | 1978-06-14 | 1990-12-25 | Fujitsu Limited | Process for producing a semiconductor device having a silicon oxynitride insulative film |
US4990463A (en) * | 1988-07-05 | 1991-02-05 | Kabushiki Kaisha Toshiba | Method of manufacturing capacitor |
US5049975A (en) * | 1989-03-14 | 1991-09-17 | Mitsubishi Denki Kabushiki Kaisha | Multi-layered interconnection structure for a semiconductor device |
US5091761A (en) * | 1988-08-22 | 1992-02-25 | Hitachi, Ltd. | Semiconductor device having an arrangement of IGFETs and capacitors stacked thereover |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4789560A (en) * | 1986-01-08 | 1988-12-06 | Advanced Micro Devices, Inc. | Diffusion stop method for forming silicon oxide during the fabrication of IC devices |
JP2564316B2 (en) * | 1987-08-10 | 1996-12-18 | 株式会社日立製作所 | Semiconductor device and manufacturing method thereof |
-
1991
- 1991-07-29 JP JP3188512A patent/JP2722873B2/en not_active Expired - Lifetime
-
1992
- 1992-07-22 KR KR1019920013034A patent/KR0131448B1/en not_active IP Right Cessation
- 1992-07-23 EP EP92112613A patent/EP0525650B1/en not_active Expired - Lifetime
- 1992-07-23 DE DE69232131T patent/DE69232131T2/en not_active Expired - Fee Related
- 1992-07-23 EP EP01107198A patent/EP1143490A1/en not_active Withdrawn
- 1992-07-28 US US07/920,921 patent/US5349494A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143393A (en) * | 1977-06-21 | 1979-03-06 | International Business Machines Corporation | High field capacitor structure employing a carrier trapping region |
US4980307A (en) * | 1978-06-14 | 1990-12-25 | Fujitsu Limited | Process for producing a semiconductor device having a silicon oxynitride insulative film |
US4746630A (en) * | 1986-09-17 | 1988-05-24 | Hewlett-Packard Company | Method for producing recessed field oxide with improved sidewall characteristics |
US4882649A (en) * | 1988-03-29 | 1989-11-21 | Texas Instruments Incorporated | Nitride/oxide/nitride capacitor dielectric |
US4990463A (en) * | 1988-07-05 | 1991-02-05 | Kabushiki Kaisha Toshiba | Method of manufacturing capacitor |
US5091761A (en) * | 1988-08-22 | 1992-02-25 | Hitachi, Ltd. | Semiconductor device having an arrangement of IGFETs and capacitors stacked thereover |
US5049975A (en) * | 1989-03-14 | 1991-09-17 | Mitsubishi Denki Kabushiki Kaisha | Multi-layered interconnection structure for a semiconductor device |
Non-Patent Citations (7)
Title |
---|
Compositional Depth Profile of a Native Oxide LPCVD MNOS Structure Using X Ray Photoelectron Spectroscopy and Chemical Etching, J. Electrochem Soc.; Solid State Science and Technology, Vol. 130, No. 3 (1983), pp. 691 699, by Wurzbach, et al. * |
Compositional Depth Profile of a Native Oxide LPCVD MNOS Structure Using X-Ray Photoelectron Spectroscopy and Chemical Etching, J. Electrochem Soc.; Solid-State Science and Technology, Vol. 130, No. 3 (1983), pp. 691-699, by Wurzbach, et al. |
European Search Report for Application No. EP 92112613 and annex thereto. * |
Inter Poly SiO 2 /Si 3 N 4 Capacitor Films 5 nm Thick for Deep Submicron LSIs, Extended Abstracts of the 20th (1988 International) Conference on Solid State Devices and Materials (1988), pp. 173 176, by J. Yugami, et al. * |
Inter-Poly SiO2 /Si3 N4 Capacitor Films 5 nm Thick for Deep Submicron LSIs, Extended Abstracts of the 20th (1988 International) Conference on Solid State Devices and Materials (1988), pp. 173-176, by J. Yugami, et al. |
Relibility of Nano Meter Thick Multi Layer Dielectric Films on Poly Crystalline Silicon, Proceedings of 25th Annual IEEE Reliability Physics Symposium (1987), pp. 55 59, by Y. Ohji, et al. * |
Relibility of Nano-Meter Thick Multi-Layer Dielectric Films on Poly-Crystalline Silicon, Proceedings of 25th Annual IEEE Reliability Physics Symposium (1987), pp. 55-59, by Y. Ohji, et al. |
Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5519323A (en) * | 1992-05-15 | 1996-05-21 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Integrable conductivity measuring device |
US5691556A (en) * | 1993-02-17 | 1997-11-25 | Seiko Instruments Inc. | Step-up semiconductor integrated circuit and electronic equipment using the semiconductor integrated circuit |
US7238582B2 (en) | 1993-03-09 | 2007-07-03 | Hitachi, Ltd. | Semiconductor device and process of producing the same |
US20050101097A1 (en) * | 1993-03-09 | 2005-05-12 | Hiromi Shimamoto | Semiconductor device and process of producing the same |
US6835632B2 (en) | 1993-03-09 | 2004-12-28 | Hitachi, Ltd. | Semiconductor device and process of producing the same |
US6610569B1 (en) | 1993-03-09 | 2003-08-26 | Hitachi, Ltd. | Semiconductor device and process of producing the same |
US6524924B1 (en) | 1993-03-09 | 2003-02-25 | Hitachi, Ltd. | Semiconductor device and process of producing the same |
US6133094A (en) * | 1993-03-09 | 2000-10-17 | Hitachi Ltd | Semiconductor device and process of producing the same |
US5508221A (en) * | 1993-12-02 | 1996-04-16 | Nec Corporation | Method for forming capacitor element of DRAM |
US5753963A (en) * | 1994-11-07 | 1998-05-19 | International Busness Machines Corp. | Multi-surfaced capacitor for storing more charge per horizontal chip area |
US5940676A (en) * | 1995-09-21 | 1999-08-17 | Micron Technology, Inc. | Scalable high dielectric constant capacitor |
US5793076A (en) * | 1995-09-21 | 1998-08-11 | Micron Technology, Inc. | Scalable high dielectric constant capacitor |
US6165804A (en) * | 1995-09-21 | 2000-12-26 | Micron Technology, Inc. | Scalable high dielectric constant capacitor |
US6259125B1 (en) | 1995-09-21 | 2001-07-10 | Micron Technology, Inc. | Scalable high dielectric constant capacitor |
US5985676A (en) * | 1995-11-13 | 1999-11-16 | Micron Technology, Inc. | Method of forming capacitor while protecting dielectric from etchants |
US5631804A (en) * | 1995-11-13 | 1997-05-20 | Micron Technology, Inc. | Contact fill capacitor having a sidewall that connects the upper and lower surfaces of the dielectric and partially surrounds an insulating layer |
US6133108A (en) * | 1995-11-13 | 2000-10-17 | Micron Technology, Inc. | Dielectric etch protection using a pre-patterned via-fill capacitor |
US5801916A (en) * | 1995-11-13 | 1998-09-01 | Micron Technology, Inc. | Pre-patterned contact fill capacitor for dielectric etch protection |
US6331442B1 (en) | 1995-11-13 | 2001-12-18 | Micron Technology, Inc. | Pre-patterned contact fill capacitor for dielectric etch protection |
US6258690B1 (en) * | 1996-03-29 | 2001-07-10 | Nec Corporation | Method of manufacturing semiconductor device |
US5844771A (en) * | 1996-06-26 | 1998-12-01 | Micron Technology, Inc. | Capacitor construction |
US6171925B1 (en) | 1996-06-26 | 2001-01-09 | Micron Technology, Inc. | Capacitor, and methods for forming a capacitor |
US5843830A (en) * | 1996-06-26 | 1998-12-01 | Micron Technology, Inc. | Capacitor, and methods for forming a capacitor |
US5812364A (en) * | 1996-07-03 | 1998-09-22 | Mitsubishi Denki Kabushiki Kaisha | Capacitor |
US7071067B1 (en) | 1997-06-09 | 2006-07-04 | Micron Technology, Inc. | Fabrication of integrated devices using nitrogen implantation |
US6037639A (en) * | 1997-06-09 | 2000-03-14 | Micron Technology, Inc. | Fabrication of integrated devices using nitrogen implantation |
US6180449B1 (en) | 1997-08-21 | 2001-01-30 | Micron Technology, Inc. | Depletion compensated polysilicon electrodes |
US6333536B1 (en) | 1997-08-21 | 2001-12-25 | Micron Technology, Inc. | Depletion compensated polysilicon electrodes |
US5917213A (en) * | 1997-08-21 | 1999-06-29 | Micron Technology, Inc. | Depletion compensated polysilicon electrodes |
US6506645B2 (en) | 1997-08-21 | 2003-01-14 | Micron Technology, Inc. | Depletion compensated polysilicon electrodes |
US6284663B1 (en) * | 1998-04-15 | 2001-09-04 | Agere Systems Guardian Corp. | Method for making field effect devices and capacitors with thin film dielectrics and resulting devices |
US6351005B1 (en) | 1998-09-17 | 2002-02-26 | Micron Technology, Inc. | Integrated capacitor incorporating high K dielectric |
US6124164A (en) * | 1998-09-17 | 2000-09-26 | Micron Technology, Inc. | Method of making integrated capacitor incorporating high K dielectric |
US20030139061A1 (en) * | 1998-10-23 | 2003-07-24 | Nanseng Jeng | Barrier in gate stack for improved gate dielectric integrity |
US6562730B2 (en) | 1998-10-23 | 2003-05-13 | Micron Technology, Inc. | Barrier in gate stack for improved gate dielectric integrity |
US6373114B1 (en) | 1998-10-23 | 2002-04-16 | Micron Technology, Inc. | Barrier in gate stack for improved gate dielectric integrity |
US6770571B2 (en) | 1998-10-23 | 2004-08-03 | Micron Technology, Inc. | Barrier in gate stack for improved gate dielectric integrity |
US6930363B2 (en) | 1998-10-23 | 2005-08-16 | Micron Technology, Inc. | Barrier in gate stack for improved gate dielectric integrity |
US20050017312A1 (en) * | 1998-10-23 | 2005-01-27 | Nanseng Jeng | Barrier in gate stack for improved gate dielectric integrity |
US6483691B1 (en) * | 1999-02-04 | 2002-11-19 | Rohm Co., Ltd. | Capacitor and method for manufacturing the same |
US6458714B1 (en) | 2000-11-22 | 2002-10-01 | Micron Technology, Inc. | Method of selective oxidation in semiconductor manufacture |
US20030224563A1 (en) * | 2001-12-28 | 2003-12-04 | Stmicroelectronics S.R.L. | Manufacturing process of a semiconductor non-volatile memory cell and corresponding memory cell |
US7262098B2 (en) * | 2001-12-28 | 2007-08-28 | Stmicroelectronics S.R.L. | Manufacturing process of a semiconductor non-volatile memory cell |
US6614643B1 (en) * | 2002-04-24 | 2003-09-02 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device having a capacitor element |
US20080170346A1 (en) * | 2007-01-17 | 2008-07-17 | Andrew Corporation | Folded Surface Capacitor In-line Assembly |
US8174132B2 (en) | 2007-01-17 | 2012-05-08 | Andrew Llc | Folded surface capacitor in-line assembly |
Also Published As
Publication number | Publication date |
---|---|
JP2722873B2 (en) | 1998-03-09 |
DE69232131T2 (en) | 2002-07-11 |
EP0525650A3 (en) | 1993-04-07 |
KR0131448B1 (en) | 1998-04-15 |
DE69232131D1 (en) | 2001-11-22 |
EP0525650A2 (en) | 1993-02-03 |
EP0525650B1 (en) | 2001-10-17 |
KR940002375A (en) | 1994-02-17 |
EP1143490A1 (en) | 2001-10-10 |
JPH0536899A (en) | 1993-02-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5349494A (en) | Semiconductor device with capacitor insulating film and method for fabricating the same | |
US4464701A (en) | Process for making high dielectric constant nitride based materials and devices using the same | |
US4996081A (en) | Method of forming multiple nitride coating on silicon | |
US5780115A (en) | Methods for fabricating electrode structures including oxygen and nitrogen plasma treatments | |
US7489000B2 (en) | Capacitor structures with oxynitride layer between capacitor plate and capacitor dielectric layer | |
US4432035A (en) | Method of making high dielectric constant insulators and capacitors using same | |
US4874716A (en) | Process for fabricating integrated circuit structure with extremely smooth polysilicone dielectric interface | |
US20020197790A1 (en) | Method of making a compound, high-K, gate and capacitor insulator layer | |
US6734068B2 (en) | Method to form silicates as high dielectric constant materials | |
US4603059A (en) | Method of manufacturing MIS capacitors for semiconductor IC devices | |
US6235594B1 (en) | Methods of fabricating an integrated circuit device with composite oxide dielectric | |
JPH11233723A (en) | Electronic element and its manufacture, and dielectric capacitor and its manufacture, and optical element and its manufacture | |
US5013692A (en) | Process for preparing a silicon nitride insulating film for semiconductor memory device | |
EP0851473A2 (en) | Method of making a layer with high dielectric K, gate and capacitor insulator layer and device | |
US6548854B1 (en) | Compound, high-K, gate and capacitor insulator layer | |
US5470611A (en) | Method for forming an oxide film of a semiconductor | |
EP0154670B1 (en) | Process for producing a semiconductor device having insulating film | |
US6323114B1 (en) | Stacked/composite gate dielectric which incorporates nitrogen at an interface | |
EP0418468B1 (en) | Method for producing an ultra-thin dielectric for microelectronics applications | |
US4840917A (en) | Method of interface state reduction in MNOS capacitors | |
US20010013616A1 (en) | Integrated circuit device with composite oxide dielectric | |
JPH0561783B2 (en) | ||
JPS5984570A (en) | Manufacture of capacitor for semiconductor device | |
JP2612098B2 (en) | Manufacturing method of insulating film | |
JPH0680738B2 (en) | Method for manufacturing semiconductor device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEC CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ANDO, KOICHI;REEL/FRAME:006214/0300 Effective date: 19920710 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: NEC ELECTRONICS CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NEC CORPORATION;REEL/FRAME:013758/0440 Effective date: 20021101 |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
AS | Assignment |
Owner name: RENESAS ELECTRONICS CORPORATION, JAPAN Free format text: CHANGE OF NAME;ASSIGNOR:NEC ELECTRONICS CORPORATION;REEL/FRAME:025148/0001 Effective date: 20100401 |